Photograph shows the steel cells of cluster "G" and "D" separated by the timber-crib plug. Excavation activities in progress on the river bedrock and the Westside bank area. Excavation of the west cofferdam area amounted to 10,000,000 cubic yards...

Photograph shows a multitude of workers involved in excavation activities behind the timber crib and the west cofferdam. Excavation activities continued behind a protective steel piling structure that boxed in the men and made mechanized concrete...

Photograph shows a multitude of workers involved in excavation activities behind the timber crib and the west cofferdam. Excavation activities continued behind a protective steel piling structure that boxed in the men and made mechanized concrete...

The excavation and removal process depicted began in 1940 and was continued throughout 1941 on a daily basis by three shifts of workers. By completion in August, 1941 total excavated material amounted to 1,08,696 cubic yards of common material and...

Photograph demonstrates concentration of labor power required for excavation activities where men were the mass expenditure in lieu of machinery that was less efficient in the cramped excavation of the deeper crevices in the river bed.